Module 7 - WAN Concepts

Front

Which situation describes data transmissions over a WAN connection? Options: An employee prints a file through a networked printer that is located in another building. A manager sends an email to all employees in the department with offices that are located in several buildings. An employee shares a database file with a co-worker who is located in a branch office on the other side of the city. A network administrator in the office remotely accesses a web server that is located in the data center at the edge of the campus.

Back

An employee shares a database file with a co-worker who is located in a branch office on the other side of the city.

Answer explanation

When two offices across a city are communicating, it is most likely that the data transmissions are over some type of WAN connection. Data communications within a campus are typically over LAN connections.

Front

Which network scenario will require the use of a WAN?

Back

Employees need to connect to the corporate email server through a VPN while traveling.

Answer explanation

When traveling employees need to connect to a corporate email server through a WAN connection, the VPN will create a secure tunnel between an employee laptop and the corporate network over the WAN connection. Obtaining dynamic IP addresses through DHCP is a function of LAN communication. Sharing files among separate buildings on a corporate campus is accomplished through the LAN infrastructure. A DMZ is a protected network inside the corporate LAN infrastructure.

Front

Which circumstance would result in an enterprise deciding to implement a corporate WAN? Options: when its employees become distributed across many branch locations, when the network will span multiple buildings, when the number of employees exceeds the capacity of the LAN, when the enterprise decides to secure its corporate LAN

Back

when its employees become distributed across many branch locations

Answer explanation

WANs cover a greater geographic area than LANs do, so having employees distributed across many locations would require the implementation of WAN technologies to connect those locations. Customers will access corporate web services via a public WAN that is implemented by a service provider, not by the enterprise itself. When employee numbers grow, the LAN has to expand as well. A WAN is not required unless the employees are in remote locations. LAN security is not related to the decision to implement a WAN.

Front

Which WAN topology is most suitable for an enterprise with four branches where the headquarters needs full connectivity to all branches, but the branches do not need to be connected directly to each other?

Back

hub and spoke